Improvement in stump-extractors



UNITED STATES y PATENT OFFICE.

LEWIS P. PEASE, OF MCCORDSVILLE, INDIANA.

IMPROVEMENT IN STUM P-EXTgFAOTORS.

Specification forming part of Letters PatentNo. 39,744, dated September1, 1863.

To all whom it may concern.:

Be it known that I, LEwrs P. PEAsE, of McCordsville, in the county ofHancock and State of Indiana, have invented a new and ImprovedStump-Machine; and I do hereby lass, upon which is wound the chain fordrawing the stump, as hereinafter explained.

The machine further relates to a novel device for elevating the machineon wheels when it is to be moved from place to place.

In .order that others skilled in the art to which my inventionappertains may be enabled to fully understand and use the same, I willproceed to describe its construction and operation.

A A represent various parts of a strong frame, in which the operatingparts are mounted.

B is a vertical shaft, carrying at its lower end a bevel-wheel, C, whichgears with a seco'nd bevel-wheel, D, on a horizontal shaft, E.

F is a crank on the end of the shaft E.

G is a connecting-rod or pitinan extending from the crank F to the hingeof a togglelever or jointed rod, H The said toggle-lever is pivoted atits lower end to the frame A, and at its upper end to the outer end ofan arm, X, pivoted at a: to the main frame, or upon the windlass'shaft.I is a feed-hand or pawl on the arm X, taking into a ratchet-wheel, J,on the windlass K.

" 7c is the hook to which the draft-chain L is attached.

M represents a portion ofthe sweep to which the team is attached fordriving the machinery `through the vertical shaft B. A retrograde motionof the windlass K is prevented by a O. One end of the windlass-shaft maybe formed with a square, as shown at 7s', for the wheels, P P P' P', theformer of which, P P,

are mounted near the lower edge of the rear axle, Q, which is hinged atq by its upper edge A to the main frame and is of sufficient width ordepth to support the frame entirely clear of the ground by placing theaxle in a vertical position, as shown in Fig. 2, and to lower the frameonto the ground by placing the axle in a horizontal position, as shownin Fig. 1,

and in red lines in Fig. 2. The wheels P P',

which support the front end of the machine, are afforded similarvertical adjustment by mounting their axle Qt on a bolsteIgT, which isjournaled at its ends in bell-crank levers R, pivoted at q to the mainframe, and connected by rods S to the axle Q at the respective ends ofthe latter, near the lower edges thereof.

U is a rope or chain attached at one end to the under side of the axleQ, and at the other end looped over a hook, o, formed upon a pulley, V,rigidly secured on the horizontal shaft E, so that the chain may bereadily detached.

W is a link attached at its respective `ends to the cross-beam at thelower front part of the machine, andV to an arm, w, on the upper side ofthe axle Q.

Operation: The machine being drawn over the stump which it is desired toextract, the parts are lowered to the position shown in Fig. l. Thedraft-chain L on the windlass K is then fastened to the `stump and thewindlass revolved by a hand-crank until the chain is tightened, when thesweep M is drawn around by the team and the stump quickly extracted.When it is desired to remove the machine to another place, the chain. Uis attached, as before explained, to the under side of the axle Q and tothe pulley V. By oncfourth of a revolution of the sweep the rear axle,Q, is then caused to assume its vertical position, and in so doingcommunicates motion to the bell-crank levers R through the medium of therods S. Ihe machine is thus elevated upon its wheels, and may be so heldby a catch of any suitable'form.

The abovedescribed apparatus provides a simple means of applying thegreat force required for the extraction of stumps. The peculiarcombination of crank and toggle imparts a uniform motion to theWindlass-shaft, owing to the crank being at its dead-points when thetoggle is in position to move the arm X most rapidly, and vice versa.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is

1. Transmitting motion from the sweep M to the Windlass-shaft K throughthe medium of a crank, F, and toggle H, combined and operating in themanner and for the purposes set forth.

Y 2. The combination ofthe toggle H, arm X, feed-hand I, ratchet-WheelsJ O, Windlass shaft K, and detent-pawl N, constructed, arranged, andoperating in the manner and for the purposes set forth. l

3. The rear axle, Q,hin ged at its upper edge to the main frame in thedescribed combination with rods S, bell-crank levers R, and bolster T,for raising the machine upon its Wheels.

4. The combination of the pulley'V and cord U with the axle Q and rodsS, for elevating the machine by a partial revolution of the sweep.

The above specification signed this 20th day

